Valmiki Ramayana Ayodhya Kanda Sarga 118 Shloka 3
Original Shlokaयद्यप्येष भवेद्भर्ता ममाऽर्ये वृत्तवर्जितः। अद्वैधमुपचर्तव्यस्तथाप्येष मया भवेत्।।2.118.3।।
1 source checked for this shloka
आर्ये O noble lady, एषः मम भर्ता my husband, वृत्तवर्जितः devoid of good conduct, यद्यपि भवेत् even if it happens, तथापि even then, एषः he, मया by me, अद्वैधम् without hesitation, उपचर्तव्यः should be obeyed.
O noble lady, even if my husband is devoid of good conduct, he should be obeyed without showing any hesitation.